Eye of the Eagle 2: Inside the Enemy (1989) DVD5

Anthony Glenn (Todd Field) goes through basic training before joining the hundreds of soldiers being shipped out to Vietnam. He has only just settled into life at camp before Major Sorenson arrives and organises the group for a raid on a small village from two helicopters - the troops are ordered to capture women for interrogation but when the second helicopter is destroyed, Glenn and several other soldiers are left on the ground, forced to walk through the jungle. Glenn is the only survivor of an ambush, but he is helped by a local woman called Mia and makes it back alive. During his recovery he is shocked to bump into Mia again and he discovers that Major Sorenson is supplying his female prisoners to local criminal gangs to be drugged up and forced to work as prostitutes...